[Bug 46108] New: Wine creates env var with empty string for name and it breaks python-pip

https://bugs.winehq.org/show_bug.cgi?id=46108

            Bug ID: 46108
           Summary: Wine creates env var with empty string for name and it
                    breaks python-pip
           Product: Wine
           Version: 3.17
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs(a)winehq.org
          Reporter: stu.axon(a)gmail.com
      Distribution: ---

When I try and install things using pip (from python 2.7, since python 3.5
install doesn't work right not).

it fails, with 

*** ValueError: illegal environment variable name

If I open the python interpreter I can see there is an env var with the name of
an empty string:
> > > import os
> > > os.environ['']
> > > 'Z:=Z:\\home\\stu\\Downloads'

I had a look at this outside of wine and the env var doesn't show up when
running the same python.

I edited pythons pip code to remove the env var:
~/.wine/drive_c/Python27/Lib/site-packages/pip/_internal/utils/misc.py

I changed these lines:

    env = os.environ.copy()
    if extra_environ:
        env.update(extra_environ)

To:

    env = os.environ.copy()
    if extra_environ:
        env.update(extra_environ)
    env.pop('')


And then pip succeeds

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[Bug 46108] Wine creates env var with empty string for name and it breaks python-pip

https://bugs.winehq.org/show_bug.cgi?id=46108

Damjan Jovanovic <damjan.jov(a)gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |damjan.jov(a)gmail.com

--- Comment #1 from Damjan Jovanovic <damjan.jov(a)gmail.com> ---
I don't see the empty string in my setup.
Python 3.7.4
Wine 4.12.1

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